CAJ | 학술논문

针对传统一次调频策略普遍存在调频能力不足且容易引起调频装置剧烈振荡的问题，提出了基于频率偏差判断闭锁反向调节作用的“快动缓回”及“快动慢回”一次调频改进策略。该策略通过闭锁或限制与电网频率偏差反向的调频作用为电网贡献更多的调频电量，使一次调频更好地与二次调频(自动发电控制(AGC))相结合，从而更快地消除电网的频率偏差，提高电网频率的控制品质。通过合理设置调频增益等控制参数，对该方法在应用中易出现的功率过调或功率跳变问题给出了初步的解决办法。最后，将传统的一次调频策略与快动缓回一次调频策略分别应用于2台燃煤机组，并进行了试验。试验结果表明，所提的快动缓回一次调频策略既可为电网贡献更多的调频电量，又能减少发电机组的调频磨损，可达到“网源双盈”的效果。
침대전통일차조빈책략보편존재조빈능력불족차용역인기조빈장치극렬진탕적문제，제출료기우빈솔편차판단폐쇄반향조절작용적“쾌동완회”급“쾌동만회”일차조빈개진책략。해책략통과폐쇄혹한제여전망빈솔편차반향적조빈작용위전망공헌경다적조빈전량，사일차조빈경호지여이차조빈(자동발전공제(AGC))상결합，종이경쾌지소제전망적빈솔편차，제고전망빈솔적공제품질。통과합리설치조빈증익등공제삼수，대해방법재응용중역출현적공솔과조혹공솔도변문제급출료초보적해결판법。최후，장전통적일차조빈책략여쾌동완회일차조빈책략분별응용우2태연매궤조，병진행료시험。시험결과표명，소제적쾌동완회일차조빈책략기가위전망공헌경다적조빈전량，우능감소발전궤조적조빈마손，가체도“망원쌍영”적효과。
To solve the common problem that the traditional primary frequency regulation control strategy is not able to achieve sufficient primary frequency regulation capability and is easy to cause intense oscillation of frequency modulation devices,a primary frequency regulation control strategy with“fast-moving and delayed-returning"or“fast-moving and slow-returning"technology is proposed based on the j udging of frequency difference and the blocking of inverse regulating action.The proposed strategy can provide more frequency regulation electric power by blocking or limiting the inverse frequency regulation effect of power grid,which makes the primary frequency regulation better coordinated with the secondary frequency regulation,thus improving both the elimination speed of power grid frequency difference and the quality of power grid frequency control. Furthermore,a counter-measure against power overcorrection or power j umping problems in practical applications is proposed by setting appropriate control parameters such as the frequency regulation gain.In the end,in order to prove the effectiveness of the proposed strategy,both the traditional primary frequency regulation control strategy and the proposed strategy are applied to two coal-fired power generating units.Experimental results show that the proposed strategy can provide more frequency regulation electricity for power grid as well as reduce generator wear caused by frequency regulation,thus benefiting both power grid and generator units.